For most of the 20th Century, the U.S. was the world leader in science, technology, and innovation, with the best scientists, the best universities and the most advanced research and development programs. But all of that has begun to change as other countries and regions have become more advanced and more competitive and increasingly challenge U.S. dominance “

A recent article in the New York Times addressed the U.S. technological decline, and the ways Senators Obama and McCain have approached the issue. This story includes some eye-opening statistics about the loss of U.S. primacy in technology, innovation and R&D. At the top of the story, the Times points out the importance of this sector for America’s economy and role in the world:

For decades the United States dominated the technological revolution sweeping the globe. The nation’s science and engineering skills produced vast gains in productivity and wealth, powered its military and made it the de facto world leader. Today, the dominance is eroding.

One sees this in multiple indicators, but perhaps the most important is the country’s high-technology balance of trade. Until 2002, the U.S. always exported more high-tech products than it imported. In that year, the trend reversed, and the technology trade balance has steadily declined, with the annual gap exceeding $50 billion in 2007.

The U.S. has also fallen behind in spending on research and development, which drives high-tech innovation and development.